A wire can sustain the weight of 20kg before breaking. If the wire is cut into two equal parts, each part can sustain a weight of
Correct answer: B. 20kg
- A. 10kg
- B. 20kg
- C. 40kg
- D. 80kg
Explanation
The breaking stress in each part of the wire will be the same as the original because of the same material. Since the area remains the same each part can sustain a weight of 20 kg.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Force and Motion questions
A train is 200m long and is moving with uniform velocity of 36 km/h the time it will take to cross a bridge of 1 km is
Car "X" is travelling at half the speed of car "Y" and mass of car X is twice as compared to the mass of car 'Y". Which of the following statements is correct?
The paratrooper of mass 80 ๐๐ descends vertically at a constant velocity of 3 ๐ ๐ โ1taking the acceleration of free fall as 10 ๐ ๐ โ2. Find out what is the net force acting on him?
A shell of mass m moving with velocity v suddenly breaks into two pieces. The part having mass m/4 remains stationary. The velocity of the other shell will be:
The velocity time plot for a particular moving on a straight line is shown in the figure:
A person, travelling on a motorway a total distance of 200 km,travels the first 90 km at an average speed of 80 km/hr. Which average speed must be obtained for the rest of the journey if the person is to reach the destination in a total time of 2 hours 0 minutes?