Choose the correct options for the following questions.
A 1000 kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:
Difficulty: Easy
A:
$8.1 \times 10^{7} N$
B:
625 N
C:
6250 N
D:
None
If a toy car moves with a uniform speed of 2 m/sec in a circle of 0.4 m radius. His angular velocity in rev/sec is:
Difficulty: Easy
A:
$10 \pi$
B:
0.8
C:
$0.2 \pi$
D:
None
A car is turning around a corner at 10 m/sec as it travels along an arc of a circle. If value of centripetal acceleration is 10 $m/sec^{2}$ in this case, find radius of the circular path:
Difficulty: Easy
A:
1 m
B:
5 m
C:
10 m
D:
15 m
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