(a) In a figure below, a box mass 100 kg, is moved by a force F = 50 N on a floor for 40 m in positive-x direction. The force F is directed 25° above the horizontal line. Calculate the work done by the force F to displace the box 40 m along x-axis. [1 mark] F = 50N 40 m (b) In a diagram below, a 12 kg object is released from rest on a rough inclined plane. The coefficients of friction for the object and the plane is ₂ = 0.15 The distance d from the initial point of the object to one end of the spring is 2.5 m. The spring constant & and the angle are 1100 N/m and 40° respectively. (Put the answers in three significant figures) wwwww. 8 (i) Calculate the net work done on the 12 kg object while it is sliding the distance d = 2.5 m. [3 marks]
(i) Calculate the net work done on the 12 kg object while it is sliding the distance d = 2.5 m. [3 marks]
(ii) Determine the speed of the 12 kg object just before it hits the spring. [2 marks]
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!