ICSE Class 10 Answered
An effort of 10 N is applied at the free end of the string passing on a single movable pulley system with a load attached to it. The weight of the movable pulley is 3 N. The frictional forces are negligible.
(a) Calculate the mass of the load being raised.
(b) On a diagram of the pulley system with strings, mark the directions of the forces, effort E, tension in the strings T and the load L.
(c) Calculate the tension T in anyone segment of the string.
(d) Also calculate V.R, M.A and efficiency. Take g = 10 ms-2
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Given : E = 10 N, W = 3 N, mass of load = ?, T = ? V.R, M.A and 
E = T, L + W = 2T = 2E; L = 2E - W = 20 - 3 = 17 N
(a) Mass of load = 17 / 10 = 1.7 kg
(b)
(c)T = E = 10 N
(d)
Answered by | 04 Jun, 2014, 03:23: PM
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