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Starting from rest, a body slides down a 45° inclined plane in twice the time it takes to slide down the same distance in the absence of friction.The coefficient of friction between the body and the inclined plane is [1988]
  • a)
    0.80
  • b)
    0.75
  • c)
    0.25
  • d)
    0.33
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Starting from rest, a body slides down a 45° inclined plane in twi...
In presence of friction a = (g sinθ – μg cosθ)
∴   Time taken to slide down the plane
In absence of friction
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Most Upvoted Answer
Starting from rest, a body slides down a 45° inclined plane in twi...
° incline with acceleration due to gravity of 9.8 m/s². What is the speed of the object after 5 seconds?

Using the formula for motion along an inclined plane:

v = u + at

where:

v = final velocity
u = initial velocity (which is zero in this case)
a = acceleration due to gravity along the incline (which is gsinθ)
t = time

We can substitute the values given:

v = 0 + (9.8 m/s² x sin 45°) x 5 seconds

v = 34.6 m/s

Therefore, the speed of the object after 5 seconds is 34.6 m/s.
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Community Answer
Starting from rest, a body slides down a 45° inclined plane in twi...
F= mgsin - f= mgsin- miu N= ma
a= gsin-miucos
since block is at rest thus initial velocity u= 0
time taken to slide down the olane
t1=(2s^2)÷(gsin-miugcos)^2
in absence of friction time taken will be
t2=(2s)^2÷(gsin)^2
Given t1=2t2
t1^2= 4t2^2
(2s÷(gsin- miucos)=( 2s×4) ÷gsin
sin= 4sin- 4 miu cos
miu=( 3÷4)tan
(3÷4(tan)=(3÷4)×tan45
miu= 0.75
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Starting from rest, a body slides down a 45° inclined plane in twice the time it takes to slide down the same distance in the absence of friction.The coefficient of friction between the body and the inclined plane is [1988]a)0.80b)0.75c)0.25d)0.33Correct answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Starting from rest, a body slides down a 45° inclined plane in twice the time it takes to slide down the same distance in the absence of friction.The coefficient of friction between the body and the inclined plane is [1988]a)0.80b)0.75c)0.25d)0.33Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Starting from rest, a body slides down a 45° inclined plane in twice the time it takes to slide down the same distance in the absence of friction.The coefficient of friction between the body and the inclined plane is [1988]a)0.80b)0.75c)0.25d)0.33Correct answer is option 'B'. Can you explain this answer?.
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