A teenager on a skateboard has a weight of 400 N. They can ride up a straight skateboard ramp with an effort force of 50 N.Calculate the mechanical advantage provided by the skate ramp.

A bike has a weight of 100 N but a certain ramp allows it to be lifted with an effort force of only 10 N.Calculate the mechanical advantage provided by the ramp.0.1110100

During the skateboard finals, Jonas encounters a 6 m long, 15◦ upward ramp. Jonas’s mass, including the skateboard, is 65 kg, and the coefficient of rolling friction between her wheels and the ramp is 0.025(b) Find the net mechanical energy at the top of the ramp. (c) With what speed must he start up the ramp to reach the top at 2.5 m s−1? (d) What percentage of his mechanical energy is lost to friction? (e) Jonas now runs forward with his skater at 2.0 m s−1 to the top of an arched skating ramp with a radius of curvature 5 m. The ramp is a very slippery slope. What is his (i) maximum normal force, and (ii) speed at the bottom of the ramp?Solve it and calculate the equation

The roadies at a music concert have to get a piano weighing 2500 N onto a stage 1.5 m high. They have a 6 m-long ramp.Calculate the ideal mechanical advantage of the ramp.With the piano on a small trolley they have to exert 700 N force to push it up the ramp. Determine the actual mechanical advantage of the ramp.Is the actual mechanical advantage greater than, less than, or the same as the ideal mechanical advantage? Explain why this would be.In a world with no friction, calculate the effort force the roadies would need to apply to get the piano up the ramp.Note: Show your calculations.

A wheelchair ramp at a concert hall provides a mechanical advantage of 20.Calculate the effort force needed to lift a load of 1000 N.50 N100 N1000 N20,000 N

Two students are sliding a 34.3 kg mass upa 36.2 degrees ramp. Both are exerting their forces parallel to the surface. One student is at the top of the ramp, pulling the mass up it via a rope with a force of 254 N. The other students is pushing the mass up the ramp, using a force of 176 N. The cofficient of kinetic friction is 0.431. Determine the acceleration of the mass.