Question

A rope is being used to pull a mass of 10 kg vertically upward. Determine the tension or
he rope, if starting from rest, the mass acquires a velocity of 4 ms'in 8s (g=10ms'l
​

Answer 1

Answer:

The correct answer is - 105 N.

Explanation:

Given -

Mass = 10 kg upward

velocity = 4 ms'in 8s

Tension = Force of gravity + acceleration force

T  = mg + ma

= $\(\frac{4 - 0}{8}\)$

= $0.5 ms\(^{-2}\)$

Tension = $\(10 \times 10 + 10 \times 0.5\)$

= 100 + 5

= 105N

Thus, the correct answer is : 105 N.

Answer 2

Answer:

105N

Explanation:

first calculate the acceleration of the mass

a = v/t

a = 4/8

a = 0.5m/s².

therefore

T = m(a+g)

T = 10(0.5+10)

T = 10(10.5)

T = 105N.