Answer:s
W = - 10628.85 J
Step-by-step explanation:
given,
weight of piano (mg)= 5592 N
distance of push = 3.79 m
angle = θ = 30.1°
displacement will in opposite direction of force (mg sinθ).
displacement make an angle of Φ i.e. 180° with the force
now,
Work done = F . s cos Φ
W = m g sin θ x s x cos (180°)
W = 5592 x sin 30.1° x 3.79 x cos (180°)
W = - 5592 x sin 30.1° x 3.79
W = - 10628.85 J
negative sign shows the direction of work done.