Terms in this set (13) Do you think the Skater will make it over the first hump? (no friction on the track? Option C: Yes, Because all of his potential energy will be converted to kinetic energy.
How will the presence of friction affect the skater?
How does friction affect the skateboarder’s ride? Answer: The greater the gravity, the faster the skateboarder goes and the lesser the gravity, the slower the skateboarder goes. The greater the friction, the slower the skateboarder goes and the lesser the friction, the faster the skateboarder goes.
Why does a skater slow down and eventually stop when there is friction on the track?
Friction opposes the motion of all moving objects, so—like the skateboard—all moving objects eventually stop moving even if no other forces oppose their motion.
What happens to the mechanical energy of the skater as they move on a frictionless ramp?
The skater is going up and down the ramp without losing energy, because the ramp is frictionless. Due to this, he continues to reach the same height on each end of the ramp as his kinetic energy (energy of motion) is converted to gravitational potential energy (energy of position).
Why does the mechanical total energy of the skater not change over time unless friction is turned on )?
The mechanical energy of the skater doesn’t change unless friction is turned on because kinetic energy + potential energy is equal to mechanical energy, this means that there will always be the same amount of mechanical energy, regardless if there’s more kinetic or potential energy.
Can a person skate on ice if there is no friction?
At the same time, if there were no friction at all on ice, skating would be impossible, because it is the friction between the skate and the ice when a skater pushes off that starts the motion to begin with. And friction is also what allows a skater to ever come to a stop.
What might happen if there is no friction in boy riding a skateboard?
If an object is already in motion, inertia will keep it moving. Therefore, a skateboard at rest will remain at rest unless acted upon by an unbalanced force. In the absence of friction or any other unbalanced force, a skateboard in motion will just keep on rolling!
How does the man manage to keep the skateboard underneath him allowing him to land on it?
Physics Of Skateboarding – The Hippie Jump
He then jumps straight up without exerting any horizontal force on the board. This allows him to fly through the air at the same horizontal velocity as the board (also moving at Vh). As a result, the board remains directly below him and he is able to land on top of it.
Why is it harder to start and stop the skateboard than it is to keep it rolling?
Q: Why is it harder to start and stop the skateboard than it is to keep it rolling? A: The reason is inertia.
Which type of friction is an ice skater using when he or she glides across the rink?
The kinetic frictional force is the only horizontal force that acts on the skater, and, since it is a resistive force, it acts opposite to the direction of the motion.
When you turn the friction on what happens to the total energy of the skater where does this energy go and how does it compare to the skater without friction?
13. As the skateboarder goes down the ramp, potential energy is converted to kinetic energy. Because of friction, some of the energy in the system is converted to heat energy. Once the kinetic energy is converted to heat, the energy cannot be converted back to the potential or kinetic energy in the system.
How does the energy affect the speed and distance that the skater will move?
Question: How does the speed relate to the potential and kinetic energy of the skater? As the skater’s speed increases, the kinetic energy increases. As the speed decreases, the kinetic energy increases.
What happens to the total energy when the skater is dropped onto the ramp from above?
The total energy does not change and is only determined by the initial height of the skater when dropped on the track. 19. Over time, the thermal energy in the track will dissipate.
What conclusions can you make about how the height of the skater influences the potential and kinetic energy of the skater?
Question: What conclusions can you make about how the height of the skater influences the potential energy of the skater? The higher the skater is the more potential energy he has. As his height decreases, his potential energy decreases and his kinetic energy increases.
What happens to the total mechanical energy of the skater as time passes?
The skater’s total energy does not change (it remains the same as it was in the beginning) as he moves up the ramp. The skater’s kinetic energy is at it’s highest at the bottom of the ramp, as none of it has been used it. Potential energy was being used to get the skater to the bottom if the ramp.
What would cause skateboarders on a ramp in the real world to slow down?
The energy is being converted to thermal energy because the friction between the ramp and the skater causes heat. This means in real life that if the skater causes a lot of friction while skateboarding, he or she would be slower and have less energy on the ramp.
What type of friction is skating?
Yes, ice skating is an example of sliding friction.
How does friction reduce ice skating?
When the blades of the skates glide over the ice, there is heat generated causing the ice to melt. The ice molecules loosen up creating an almost frictionless surface. This water then acts as a lubricant (something whose purpose is decreasing friction), resulting in smooth motion over the ice.
Do ice skates create friction on ice?
So what happens when an ice skate made from aluminum or steel touches the ice? Van Leeuwen explains that the tiny liquid layer is the reason why skates can start moving instantaneously on ice. And as the blades move faster and faster through the ice, more friction is generated, which melts more water.
What might happen if there is no friction in biking uphill?
Friction stops things from sliding apart. If there was no friction everything would slide to the lowest point. It would be impossible to climb up anything.
What might happen if there is no friction in car Travelling on steep road?
If there is no friction, there is no force that can supply the centripetal force required to make the car move in a circular path – there is no way that the car can turn.