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Last Updated On 23-10-2022 - By Sara

A body is projected at t=0 with a velocity 10 ms−1 at an angle of 60° with the horizontal. The radius of its trajectory at t=1s is R. Neglecting air resistance and taking acceleration due to gravity g=10 ms−2, the value of R is:

(a)

2.5 m

(b)

10.3 m

(c)

2.8 m

(d)

5.1 m


Question ID - 50288 :-

A body is projected at t=0 with a velocity 10 ms−1 at an angle of 60° with the horizontal. The radius of its trajectory at t=1s is R. Neglecting air resistance and taking acceleration due to gravity g=10 ms−2, the value of R is:

(a)

2.5 m

(b)

10.3 m

(c)

2.8 m

(d)

5.1 m

1 Answer
5876 Votes
3537

Answer Key : (c) -

=10cos60°=5 m/s

=10cos30°=5 m/s

velocity after t=1 sec

=5 m/s

=m/s=10−5

an==

==2⇒θ=15°

R==2.8m



Next Question :

A particle in moving along a circular path with a constant speed of 10 ms−1. What is the magnitude of the change is velocity of the particle, when it moves through an angle of 600 around the centre of the circle?

(a)

Zero

(b)

10 m/s

(c)

10m/s

(d)

10m/s


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