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

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

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.

Find the force needed to lift a 2,000 N weight using a machine with a mechanical advantage of 15.

4. A crate is pulled up a ramp a distance of 20 m with a force of F = [800, 500]. The crate ends up 2 m higher above the ground than where it started. a. (APP - 4 marks) Find the force applied on the crate that moves the crate up the ramp and the force that is perpendicular to the ramp that lifts the crate up off the ramp. b. (APP - 2 marks) Find the work done moving the crate up the ramp and the work done lifting the crate 2 m above the ground.

An electric lift with a maximum load of 2000 kg (lift + passengers) is moving up with a constant speed of 1.5 ms–1. The frictional force opposing the motion is 3000 N. The minimum power delivered by the motor to the lift in watts is : (g = 10 m s–2 )           [2022]A: 20000 B: 34500 C: 23500 D: 23000