Question
Question: A man of mass m = 60 kg is standing on weighing machine fixed on a triangular wedge of angle θ = 60<...
A man of mass m = 60 kg is standing on weighing machine fixed on a triangular wedge of angle θ = 600 with horizontal as shown in the figure. The wedge is moving up with an upward acceleration a = 2 m/s2. The weight registered by machine is
A
600 N
B
1440 N
C
360 N
D
240 N
Answer
360 N
Explanation
Solution
N − mg cos θ = ma cos θ
N = m(g + a) cos θ = 60 (10 + 2) cos 600
= 360 N
Hence the correct choice is
