Kinematics (NEET Physics): Questions 65 - 68 of 233

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Question number: 65

» Kinematics » Motion in a Straight Line

MCQ▾

Question

P, Q and R are three coplanar forces acting at a point and are in equilibrium. Given P = 1.9318 kg wt, sin Q = 0.9659, the value of R is (in kg wt)

Choices

Choice (4) Response

a.

2

b.

1

c.

0.9659

d.

0.5

Question number: 66

» Kinematics » Scalars and Vectors » Scalar and Vector Products

Assertion-Reason▾

Assertion (Ꭺ)

The sum of two vectors can be zero.

Reason (Ꭱ)

Two vectors cancel each other, when they are equal and opposite.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 67

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

What is the value of linear velocity, if co = 3i -4j + k and r = 5i - 6j + 6k

Choices

Choice (4) Response

a.

-18 Equation - 13 Equation + 2 Equation

b.

6 Equation - 2 Equation + 8 Equation

c.

4 Equation - 13 Equation + 6 Equation

d.

6 Equation - 2 Equation + 3 Equation

Question number: 68

» Kinematics » Motion in a Plane

MCQ▾

Question

As shown in figure the tension in the horizontal cord is 30 N. The weight Wand tension in the string OA in newton are

Tension on the weight

Tension on the Weight

Tension on the weight

In above fig we show that tension acting on the cube of weight w and and tension in horizontal cord is 30 N.

Choices

Choice (4) Response

a.

30

Equation

, 60

b.

30

Equation

, 90

c.

30

Equation

, 30

d.

None of the above

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