MTH304 Quiz 4

Q1. If a body can have a smooth contact with every other body then such a body is said to be a ------ body.

1. Smooth
2. Rigid
3. Rough
4. None of these

Correct answer: Rigid

Q2. The ratio of limiting friction to the normal reaction is called the ------ of the friction.

1. Magnitude
2. Direction
3. coefficient
4. none of these

Correct answer: coefficient

Q3. The friction between two bodies is said to be ----- friction if one body slides along the other.

1. Static
2. Limiting
3. Dynamic
4. None of these

Correct answer: Dynamic

Q4. The resolved part of the force exerted by a body to another body along the normal at the point of contact is called the ………

1. centrifugal force
2. centripetal force
3. central force
4. Normal reaction

Correct answer: Normal reaction

Q5. If the friction between two bodies in contact is not zero, then the bodies are said to be -------- bodies.

1. none of these
2. rigid
3. smooth
4. rough

Correct answer: rough

Q6. The ability of an object to return to its original position after it has been tilted slightly is termed as-------.

1. Turning effect
2. Equilibrium
3. Centre of gravity
4. Stability

Correct answer: Stability

Q7. The resolved part of the force exerted by a body to another body along the tangent at the point of contact is called the ………

1. Centrifugal force
2. Centripetal force
3. Force of friction
4. Central force

Correct answer: Centrifugal force

Q8. If the limiting friction is 20N and the normal reaction is 40N, then the coefficient of friction is -----------

1. 0
2. 2
3. 0.5
4. 1

Correct answer: 0.5

Q9. A uniform rod CD of mass m is placed on two supports at A and B. If the rod is on the point of tilting about A then which of the following must be true about the reaction force at B?

1. it would be +ve
2. it would be -ve
3. it would be zero
4. it cannot be deternmined

Correct answer: it would be zero

Q10. A uniform rod AB of mass m is placed on two supports at C and D. If the rod is on the point of tilting about D then which of the following must be true about the reaction force at D?

1. It would be -ve
2. None of these
3. It would be zero
4. It would be +ve

Correct answer: It would be zero