Kinematics (NEET Physics): Questions 65  68 of 233
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Question number: 65
» Kinematics » Motion in a Straight Line
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 (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
Question
What is the value of linear velocity, if co = 3i 4j + k and r = 5i  6j + 6k
Choices
Choice (4)  Response  

a.  18  13 + 2 

b.  6  2 + 8 

c.  4  13 + 6 

d.  6  2 + 3 

Question number: 68
» Kinematics » Motion in a Plane
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
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 , 60 

b.  30 , 90 

c.  30 , 30 

d.  None of the above 
