Grade 11Mechanics
Q5 pls....here we have to find work done by friction right? Please tell me the solution...........
1 Answer
Shaswata Biswas
Mass of the body, m = 4 kg, velocity, v = 5 m/s, time, t = 10 s
then, displacement, S = v.t = 5×10 = 50 m
And, coefficient of friction, \mu = 0.4
Then, friction, f = \mu mg = 0.4×4×9.8 = 15.68 N
So, work done by the friction, W = f.S = 15.68×50 = 784 J.
THANKS
then, displacement, S = v.t = 5×10 = 50 m
And, coefficient of friction, \mu = 0.4
Then, friction, f = \mu mg = 0.4×4×9.8 = 15.68 N
So, work done by the friction, W = f.S = 15.68×50 = 784 J.
THANKS
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