Is there hidden cost with pulley systems that reduce effort?

A 23 kg suitcase is being pulled by a handle that is at an angle of 22 degrees above the horizontal....

A 23 kg suitcase is being pulled with a constant speed by a handle that is at an angle of 25° above...

A 5-newton block is being pulled up a ramp at a constant speed. The angle between the ramp and the h...

An 8.5 x 10^2 elevator is pulled up at a constant velocity of 1 m/s by a 10 kW motor. Calculate the...

A 78.0 kg person is being pulled away from a burning building as shown in Figure 4.27. Calculate the...

1. A 12 kg wagon is being pulled at an angle of 38o above horizontal. What force is applied to the...

A 22 kg suitcase is being pulled with constant speed by a handle that is at an angle of 23 ∘ above t...

A 84.0 kg person is being pulled away from a burning building as shown in the figure below.

I am a bit cunfused about pulleys , can anyone please explain.

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