A 0.50-kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m). When the string is horizontal, the speed of the mass is 8.0 m/s. What is the magnitude of the force of the string on the mass at this position?
a. 16 N
b. 17 N
c. 21 N
d. 11 N
e. 25 N
a
You might also like to view...
Fundamental Forces: If a new force were discovered with a range on the order of 10-18 m, predict the approximate mass of the exchange particle. (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
Fill in the blank(s) with the appropriate word(s).
Suppose working outside on a hot day someone generate 450 J of heat each second. If this energy is compensated for by the evaporation of sweat, how much water would be lost in an hour? The latent heat of fusion for water is 334 kJ/kg and for vaporization is 2,200 kJ/kg
a. 4.85 liter c. 0.50 liter b. 0.74 liter d. 1.5 liter
The materials that engineers have available for use in designs include metals, ceramics, plastics, and ______________materials.
Fill in the blank(s) with the appropriate word(s).
A motorist travels for 3.0 h at 80 km/h and 4.0 h at 60 km/h. What is her average speed for the trip?
A) 74 km/h B) 140 km/h C) 70 km/h D) 73 km/h E) 69 km/h