| ⇦ | 
| ⇨ |
A meter stick of mass 400 g is pivoted at one end and displaced through an angle 60°. The increase in its potential energy is
Options
(a) 2 J
(b) 3 J
(c) 0 J
(d) 1 J
Correct Answer:
1 J
Explanation:
Change in potential energy = mg/(1/2) (1-cosθ)
Given: mass = 400g = 0.4 kg and angle = 60°
Therefore, ∆U = 0.4 × 10 × (1/2) × (1-cos 60°) = 1 J.
Related Questions: - A metal plate weighing 750g is to be electroplated with 0.05% of its weight of silver.
- A battery of emf 10 V and internal resistance 3 ohm is connected to a resistor.
- A transistor is working in common emitter mode. Its amplification factor is 80
- During mean life of a radioactive element, the fraction that disintegrates is
- If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part
Topics: Motion of system of Particles and Rigid Body
(73)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A metal plate weighing 750g is to be electroplated with 0.05% of its weight of silver.
- A battery of emf 10 V and internal resistance 3 ohm is connected to a resistor.
- A transistor is working in common emitter mode. Its amplification factor is 80
- During mean life of a radioactive element, the fraction that disintegrates is
- If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part
Topics: Motion of system of Particles and Rigid Body (73)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply