1. The magnitude of the centripetal Force acting on a 3. 75 KG mass that is travelling at a speed of 4. 75 m/s in a horizontal circle with a radius of 0.650 m is___N. 2. The speed of an object travelling in a horizontal circle that has a radius of 7.58 m and a frequently of 5.45 Hz is ___m/s. 3. An object travels in a horizontal circle with a radius of 4.51 m. If the object experiences a centripetal acceleration of 210 m/s^2, the frequency of rotation is _.__ Hz. 4. A 0.652 kg mass is attached to a string and whirled around in horizontal circle with a radius of 0.713 m. If the maximum centripetal Force that can be applied without the string breaking is 4.61 N, The maximum time required for one revolution without the string breaking is _.__ seconds. 5. A 2.37 kg mass is attached to a 0.551m strung and swung in a vertical circle. If the time of revolution is 1.16 seconds, the magnitude of the tension in the string at the top of the circle is __._N