# GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering: Questions 159 - 162 of 170

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## Question 159

Appeared in Year: 2016

### Question

MCQ▾

The principal stresses at a point inside a solid object are MPa and . The yield strength of the material is 200 . The factor of safety calculated using Tresca (maximum shear stress) theory is and the factor of safety calculated using von Mises (maximum distortional energy) theory is . Which one of the following relations is TRUE?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 160

Rigid Bodies in Plane Motion Including Impulse and Momentum

Appeared in Year: 2015

### Question

A small ball of mass moving with a velocity of undergoes a direct central impact with a stationary ball of mass . The impact is perfectly elastic. The speed of mass ball after the impact will be ________

## Question 161

Appeared in Year: 2011

### Question

MCQ▾

A block is resting on a surface with coefficient of friction . A force of is applied to the block as shown in the figure. The friction force is

### Choices

Choice (4)Response

a.

0

b.

c.

d.

Both a. and c. are correct

## Question 162

Appeared in Year: 2014

### Question

MCQ▾

A block R of mass is placed on a block S of mass as shown in the figure. Block R is tied to the wall by a mass less and inextensible string . If the coefficient of static friction for all surfaces is the minimum force needed to move the block is

### Choices

Choice (4)Response

a.

b.

c.

0.98

d.

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