04. Circular Motion : Uniform Circular Motion, Dynamic Circular Motion
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Motion in Plane

144037 The relative angular speed of hour hand and second hand of a clock is

1 \(\frac{359 \pi}{21600}\)
2 \(\frac{719 \pi}{21600}\)
3 \(\frac{9 \pi}{21600}\)
4 \(\frac{11 \pi}{21600}\)
Motion in Plane

144038 Two cars of masses \(m_{1}\) and \(m_{2}\) are moving in circles of radii \(r_{1}\) and \(r_{2}\) respectively. Their speeds are such that they make complete circle in the same time \(t\). The ratio of their centripetal force is

1 \(\mathrm{m}_{1}: \mathrm{m}_{2}\)
2 \(\mathrm{r}_{1}: \mathrm{r}_{2}\)
3 \(1: 1\)
4 \(\mathrm{m}_{1} \mathrm{r}_{1}: \mathrm{m}_{2} \mathrm{r}_{2}\)
Motion in Plane

144039 A flat curved road on highway has radius of curvature \(400 \mathrm{~m}\). A car rounds the curve at a speed of \(24 \mathrm{~m} / \mathrm{s}\). The minimum value of coefficient of friction to prevent car from sliding is \(\left(\right.\) take \(\left.g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 0.144
2 0.376
3 0.544
4 0.100
Motion in Plane

144040 What is the ratio of the angular speeds of second hand and the minute hand of a clock ?

1 \(1: 60\)
2 \(1: 2\)
3 \(12: 1\)
4 \(60: 1\)
Motion in Plane

144037 The relative angular speed of hour hand and second hand of a clock is

1 \(\frac{359 \pi}{21600}\)
2 \(\frac{719 \pi}{21600}\)
3 \(\frac{9 \pi}{21600}\)
4 \(\frac{11 \pi}{21600}\)
Motion in Plane

144038 Two cars of masses \(m_{1}\) and \(m_{2}\) are moving in circles of radii \(r_{1}\) and \(r_{2}\) respectively. Their speeds are such that they make complete circle in the same time \(t\). The ratio of their centripetal force is

1 \(\mathrm{m}_{1}: \mathrm{m}_{2}\)
2 \(\mathrm{r}_{1}: \mathrm{r}_{2}\)
3 \(1: 1\)
4 \(\mathrm{m}_{1} \mathrm{r}_{1}: \mathrm{m}_{2} \mathrm{r}_{2}\)
Motion in Plane

144039 A flat curved road on highway has radius of curvature \(400 \mathrm{~m}\). A car rounds the curve at a speed of \(24 \mathrm{~m} / \mathrm{s}\). The minimum value of coefficient of friction to prevent car from sliding is \(\left(\right.\) take \(\left.g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 0.144
2 0.376
3 0.544
4 0.100
Motion in Plane

144040 What is the ratio of the angular speeds of second hand and the minute hand of a clock ?

1 \(1: 60\)
2 \(1: 2\)
3 \(12: 1\)
4 \(60: 1\)
Motion in Plane

144037 The relative angular speed of hour hand and second hand of a clock is

1 \(\frac{359 \pi}{21600}\)
2 \(\frac{719 \pi}{21600}\)
3 \(\frac{9 \pi}{21600}\)
4 \(\frac{11 \pi}{21600}\)
Motion in Plane

144038 Two cars of masses \(m_{1}\) and \(m_{2}\) are moving in circles of radii \(r_{1}\) and \(r_{2}\) respectively. Their speeds are such that they make complete circle in the same time \(t\). The ratio of their centripetal force is

1 \(\mathrm{m}_{1}: \mathrm{m}_{2}\)
2 \(\mathrm{r}_{1}: \mathrm{r}_{2}\)
3 \(1: 1\)
4 \(\mathrm{m}_{1} \mathrm{r}_{1}: \mathrm{m}_{2} \mathrm{r}_{2}\)
Motion in Plane

144039 A flat curved road on highway has radius of curvature \(400 \mathrm{~m}\). A car rounds the curve at a speed of \(24 \mathrm{~m} / \mathrm{s}\). The minimum value of coefficient of friction to prevent car from sliding is \(\left(\right.\) take \(\left.g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 0.144
2 0.376
3 0.544
4 0.100
Motion in Plane

144040 What is the ratio of the angular speeds of second hand and the minute hand of a clock ?

1 \(1: 60\)
2 \(1: 2\)
3 \(12: 1\)
4 \(60: 1\)
Motion in Plane

144037 The relative angular speed of hour hand and second hand of a clock is

1 \(\frac{359 \pi}{21600}\)
2 \(\frac{719 \pi}{21600}\)
3 \(\frac{9 \pi}{21600}\)
4 \(\frac{11 \pi}{21600}\)
Motion in Plane

144038 Two cars of masses \(m_{1}\) and \(m_{2}\) are moving in circles of radii \(r_{1}\) and \(r_{2}\) respectively. Their speeds are such that they make complete circle in the same time \(t\). The ratio of their centripetal force is

1 \(\mathrm{m}_{1}: \mathrm{m}_{2}\)
2 \(\mathrm{r}_{1}: \mathrm{r}_{2}\)
3 \(1: 1\)
4 \(\mathrm{m}_{1} \mathrm{r}_{1}: \mathrm{m}_{2} \mathrm{r}_{2}\)
Motion in Plane

144039 A flat curved road on highway has radius of curvature \(400 \mathrm{~m}\). A car rounds the curve at a speed of \(24 \mathrm{~m} / \mathrm{s}\). The minimum value of coefficient of friction to prevent car from sliding is \(\left(\right.\) take \(\left.g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 0.144
2 0.376
3 0.544
4 0.100
Motion in Plane

144040 What is the ratio of the angular speeds of second hand and the minute hand of a clock ?

1 \(1: 60\)
2 \(1: 2\)
3 \(12: 1\)
4 \(60: 1\)