Starting from rest, a 5.3-kg blockslides 2.20 m down a rough 30.0°incline. The c

Question

Starting from rest, a 5.3-kg blockslides 2.20 m down a rough 30.0°incline. The coefficient of kinetic friction between the block andthe incline is µk = 0.436. (a) Determine the work done by the force ofgravity.
1 J

(b) Determine the work done by the friction force between block andincline.
2 J

(c) Determine the work done by the normal force.
3 J

(d) Qualitatively, how would the answers change if a shorter rampat steeper angle were used to span the same vertical height?
4 (a) Determine the work done by the force ofgravity.
1 J

(b) Determine the work done by the friction force between block andincline.
2 J

(c) Determine the work done by the normal force.
3 J

(d) Qualitatively, how would the answers change if a shorter rampat steeper angle were used to span the same vertical height?
4

Explanation / Answer

Given : Mass ( m ) = 5.3 kg g = 9.8 m/s2    Distance ( d ) = 2.20 m Angle ( ) = 30 µk = 0.436.    a ) W = k m g d            = 0.436 * 5.3 * 9.8 * 2.20            = ---- J b)   Work done ( W ) = m g [k cos + sin ] d                                    = ---- J Solve it I hope it helps you    Distance ( d ) = 2.20 m Angle ( ) = 30 µk = 0.436.    a ) W = k m g d            = 0.436 * 5.3 * 9.8 * 2.20            = ---- J b)   Work done ( W ) = m g [k cos + sin ] d                                    = ---- J Solve it I hope it helps you

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