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- What must be the mass of a box that a man could carry in his hand if his muscles is 20 square centimeter?
In a pandayan (foundry), a pot made of cast iron slid and came to a complete stop atop a surface also made of cast iron. The pot was quite heavy (m= 2.5 kg) and had an acceleration of 4.5 m/s². Calculate the frictional force that stopped the pot. (Hint: Since the pot was originally sliding, the frictional force involved is kinetic friction.]
(a) Find a conversion factor to convert from miles per hour to kilometers per hour.
(a) Find a conversion factor to convert from miles per hour to kilometers per hour. (b) In
the past, a federal law mandated that highway speed limits would be 55 mi/h. Use the
conversion factor of part (a) to find this speed in kilometers per hour. (c) The maximum
highway speed is now 65 mi/h in some places. In kilometers per hour, how much increase
is this over the 55 mi/h limit?
How far does a sled travel in 3 hours while accelerating from 10 miles/hour to 14 miles/ hour?
A 6.0 kg mass is placed on a 20° incline which has a coefficient of friction of 0.15. What is the acceleration of the mass down the incline?
A force = 8 î − 3 ĵ N
acts on a particle that undergoes a displacement Δ = 2 î + ĵ m.
(a) Find the work done by the force on the particle.
A 55N picture frame was hung with two strings supporting it. Each string makes 30 degrees with an overhead horizonatal beam. (a) Draw FBD (b)Find the Tension for each.
A christmas decorations of three identical balls, each with mass of 0.15kg, was hung as shown below. (a) Draw FBD (b) Find the tension of each string supporting each ball.
A 10Ω resistor is connected in parallel to 32Ω resistor and a voltage source of 24V. Find the effective resistance and total current provided in the circuit. Determine the current in each of the resistors.
