# Applied Mechanics and Design [GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering]: Questions 40 - 42 of 82

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## Question 40

Applied Mechanics and Design
Free Body Diagrams

Appeared in Year: 2020

### Question

MCQ▾

An attempt is made to pull a roller of weight W over a curb (step) by applying a horizontal force F as shown in the figure.

The coefficient of static friction between the roller and the ground (including the edge of the step) is . Identify the free body diagram (FBD) of the roller when the roller is just about to climb over the step.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 41

Applied Mechanics and Design
Velocity and Accceleration Analysis of Plane Mechanisms

Appeared in Year: 2019

### Question

MCQ▾

A flat-faced follower is driven using a circular eccentric cam rotating at a constant angular velocity . At time t = 0, the vertical position of the follower is , and the system is in the configuration shown below.

The vertical position of the follower face, y (t) is given by ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 42

Applied Mechanics and Design
Rigid Bodies in Plane Motion Including Impulse and Momentum

Appeared in Year: 2019

### Question

MCQ▾

The rotor of a turbojet engine of an aircraft has a mass 180 kg and polar moment of intertia 10 kg. about the rotor axis. The rotor rotates at a constant speed of 1100 rad/s in the clockwise direction when viewed from the front of the aircraft. The aircraft while flying at a speed of 800 km per hour takes a turn with a radius of 1.5 km to the left. The gyroscopic moment exerted by the rotor on the aircraft structure and the direction of motion of the nose when the aircraft turns, are

### Choices

Choice (4)Response

a.

1629.6 N. m and the nose goes up

b.

162.9 N. m and the nose goes down

c.

162.9 N. m and the nose goes up

d.

1629.6 N. m and the nose goes down

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