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Title: A monkey hangs on a massless cable which passer over a frictionless
Description: exam questions with solutions and explanation
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Answer




a = 2
...
25 N

Explanation
Let m = 8kg, mass of monkey
M = 15kg , mass of banana
Required :
T =?
a=?

Solution:
Resultant force of monkey ;
F = T-mg -> eq1
Resultant force of banana ;
F = Mg - T -> eq2
;F= ma
Resultant force of monkey ;
ma= T - mg
T = ma+mg -> eq3
Resultant force of banana ;
Ma= Mg - T ; substitute eq3 to Tension T
Ma= Mg - (ma+mg)
Ma= Mg-ma-mg
Solve for a ;
Ma +ma = Mg -mg
a(M+ma)= g(M-m)
a = g(M-m)/(M+m)
= 9
...
98 m/s2
Solve for Tension, T , using eq3 ;
T = ma +mg
= m (a+g)
= 8(2
...
8)
T = 102
Title: A monkey hangs on a massless cable which passer over a frictionless
Description: exam questions with solutions and explanation
Buy These NotesPreview