Sebuah silinder dengan slot yang terhubung pada piston digerakan dengan kecepatan v seperti terlihat pada gambar. Hitung kecepatan dan percepatan yg terjadi.
Tampilkan postingan dengan label kinematika dan dinamika. Tampilkan semua postingan
Tampilkan postingan dengan label kinematika dan dinamika. Tampilkan semua postingan
Selasa, 26 April 2011
Kecepatan dan Percepatan Koriolis
Sebuah silinder dengan slot yang terhubung pada piston digerakan dengan kecepatan v seperti terlihat pada gambar. Hitung kecepatan dan percepatan yg terjadi.
Selasa, 19 April 2011
Senin, 18 April 2011
Senin, 11 April 2011
mechanics and Dynamics
prepare for UAS
1. As the 3,6 Mg flat-bed truck starts from rest with constant acceleration, the 750-kg crate slides 3m to the edge of the bed in the time that it takes the truck to acquire a velocity of 40 km/h in a distance of 15 m up the incline. find the coefficient of kinetic friction between the crate and the truck bed.
2. The tank of water is at rest on a horizontal surface when a 250-N force is applied as shown. if water issues from the rear discharge pipe at the rate of 20 kg.s with a velocity of 2,4 m/s relative to the the opening in the diection shown, calculate the initial acceleration a of the tank if its mass at the start is 300 kg. neglect the rotational inertia of the wheels.
3. The uniform rod AB is placed on the horizontal truck bed and leans on the vertical back of the cab. if the coefficient of static friction at each end is 0,4, determine the maximum acceleration a which the truck may have without slipping the rod.
Jumat, 08 April 2011
latihan soal Kinematika & dinamika #1
The 350-Mg tugboat T is used to pull the 50-Mg barge B with a rope R. If the barge is initially at rest and the tugboat is coasting freely with a velocity of (vT)1 = 3 m/s while the rope is slack, determine the velocity of the tugboat directly after the rope become taut.
Free-Body Diagram. We will consider the entire system. The impulsive force created between the tugboat and the barge is internal to the system, therefore momentum of the system is conserved during the instant of towing.
Alternative procedure of drawing the system’s impulse and momentum diagrams is as shown below
Conservation of Momentum. Noting that (vB)2 = (vT)2
This value represents the tugboat’s velocity just after the towing impulse.
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