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Activity 3: Gravitational Force
The mass of m1 of one of the small sheres of a Cavendish balance is 0.02 kg, the
mass m2 of the nearest large sphere is 0.065 kg, and the center-to-center distance
between them is 0.04 m. Find the gravitational force Fg on each sphere due to the other.
The driver of a car traveling down the interstate slams on the brakes causing the car to skid to rest over a distance of 154.6 M. If the car experienced and acceleration of -3.72M/S to the second during this time how long did it take for the car to come to rest
How far would a horse that rides at 9.2 m/s travel in 5.4 minutes ?
A jet airliner flies at a constant speed covering for 98 miles in 2.3 hours. What is the speed of the plane in miles per hour
A car intially traveling at 83.1 mi/h, slows to rest in 9.3s . What is the cars acceleration.
A car initially at rest accelerates at 5.22 M/S to the second for 14.9 seconds how far did it go in this time
A gas has a volume of 120m³ at stp. if the gas is compressed adiabatically to a volume of 25m³. calculate the new temperature, pressure and work done on the gas. [Cp= 1.68kj/kg-¹ k-¹, Cv = 1.20 kj kg-¹ k-¹]
If φ = 2xz4 – x2y, find ∇φ and ‖∇φ‖ at the point (2, -2, -1).
Ans. 10 𝒂̂𝑥 - 4 𝒂̂𝑦 - 16 𝒂̂𝑧 , 2√93
Answer the following conceptual questions and practice about potential and kinetic energy.
1. You have two balls, a tennis ball and a baseball with twice the mass of the tennis ball. If you want to throw both balls with the same kinetic energy, how much faster should the tennis ball be compared to the baseball? Label your answer
Lesson: Torque
Instruction: Analyze and solve the following problems step-by-step.
1. Find the total torque acting on a body when three forces are applied on the
following: F1=10 N upward at 1 m,F2=20n upward at 2 m and F3=5N downward at 0.5 m.
2. During a machining test on a lathe, the tangential force on the tool is 150 N. If the torque on the lathe spindle is 12 N m. determine the diameter of the work-plece
