Questions tagged 'Work and Energy'
5 questions
Jan 23, 2025
A playground merry-go-round has radius 2.60 m…?
A playground merry-go-round has a radius of 2.60 m and a moment of inertia of 2300 kg·m² about a vertical axle through its center. It turns with negligible friction. (a) A child applies a force of 23...
How do you do this work and energy problem? physics urgent help!?
A 4.5 kg box slides down a 4.4 m high frictionless hill, starting from rest. It then travels across a 2.4 m wide horizontal surface before hitting a horizontal spring with a spring constant of 500 N/m...
A floating ice block is pushed through a displacement?
A floating ice block is pushed through a displacement vector ( \mathbf{d} = (24 \, \text{m}) \mathbf{i} - (12 \, \text{m}) \mathbf{j} ) along a straight embankment by rushing water. The water exerts a...
What is the work done by tension before the block goes up the incline?
A mass ( m = 16 \, \text{kg} ) is pulled along a horizontal surface with no friction for a distance ( d = 7.7 \, \text{m} ). After this, the mass is pulled up an incline that makes an angle ( \theta =...
A 1300-N crate rests on the floor. How much work is requred to move it at constant speed…?
A 1300-N crate rests on the floor. How much work is required to move it at a constant speed (a) 4.0 m along the floor against a friction force of 230 N, and (b) 4.0 m vertically? I’m unsure how to app...