Answer:
0.692 m/s²
Explanation:
When an elevator is moving up the unbalance force is given as
ma = R-W............................ Equation 1
Where m = mass , a = acceleration of the elevator, R = weight when the elevator is moving up, W = normal weight
make a the subject of the equation
a = (R-W)/m...................... Equation 2
But,
W = mg.......................... Equation 3
Where g = acceleration due to gravity.
make m the subject of the equation
m = W/g..................... Equation 4
Substitute equation 4 into equation 2
a = (R-W)/(W/g)
a = g(R-W)/W.................... Equation 5
Given: R = 910 N, W = 850 N
Constant: g = 9.8 m/s²
Substitute into equation 5
a = 9.8(910-850)/850
a = 9.8(60)/850
a = 588/850
a = 0.692 m/s²
