Question

A 300 N crate slides down the curved path from A to B in the vertical plane as shown in the figure. If the crate has a velocity of 1.2 m/s approximately down the inclined at point A and 8 m/s at B, find the work done against friction during the motion –

• A. 862 Nm
• B. 987 Nm
• C. 1200 Nm
• D. 500 Nm

Answer 1

Answer: (A)

862 Nm

Answer 2

Use work energy theorem.