If a ship of mass 4 × 1 0 7 kg initially at rest is pulled by a force of 5 × 1 0 4 N through a distance of 4 m , then the speed of the ship will be (resistance due to water is negligible)

Using, F = ma 5 × 1 0 4 ⇒ = 4 × 1 0 7 × a a = 4 × 1 0 7 5 × 1 0 4 = 4 5 × 1 0 − 3 ms − 2 Given, s = 4 m , 4 = 0 ∴ v 2 = u 2 + 2 as or v 2 = 0 + 2 × 4 5 × 4 × 1 0 − 3 = 1 0 − 2 or v = 0.1 ms − 1

Start Free Mock LoginAlready registered? Login here

Physics - NLM Question with Solution | TestHub

PhysicsNLMSimple Application of NLMMedium2 minPYQ_2012

PhysicsMediumsingle choice

If a ship of mass $4 \times 1 0^{7} kg$ initially at rest is pulled by a force of $5 \times 1 0^{4} N$ through a distance of $4 m$ , then the speed of the ship will be (resistance due to water is negligible)

Options:

Answer:

Solution:

Using, $F = ma$ $5 \times 1 0^{4} \Rightarrow = 4 \times 1 0^{7} \times a a = \frac{5 \times 1 0 ^{4}}{4 \times 1 0 ^{7}} = \frac{5}{4} \times 1 0^{- 3} ms^{- 2}$ Given, $s = 4 m, 4 = 0 ∴ v^{2} = u^{2} + 2$ as or $v^{2} = 0 + 2 \times \frac{5}{4} \times 4 \times 1 0^{- 3} = 1 0^{- 2}$ or $v = 0.1 ms^{- 1}$

Stream:MHT_CETSubject:PhysicsTopic:NLMSubtopic:Simple Application of NLM

⏱ 2mℹ️ Source: PYQ_2012

Doubts & Discussion

Loading discussions...