A particle of mass 0.5 kg is acted on by a force, in newtons ,. The particle is initially at rest at the origin and t is measured in seconds. Find the acceleration of the particle at time t. 相关知识点: 试题来源: 解析反馈 收藏 ...
aThe weekend is very great. 周末是非常伟大的。[translate] aA particle will stay at rest or continue at a constant velocity, unless acted upon by an external unbalanced force。 微粒将停留休息或继续在恒定的速度,除非由外在失衡的力量行动。[translate]...
A particle starts from rest at time t=0 and moves in a straight line, accelerating as follows:a=2; 0 ≤ t ≤ 10a=0.5; 10 < t ≤ 50a=-3; 50 < t ≤ 60where a is the acceleration in ms-2 and t is the time in seconds....
At time t=0, a particle, P, is at rest at the point (2,0). At time t seconds, its acceleration, a ms-2 is given by a=(pmatrix) 16cos 4t sin t-2sin 2t(pmatrix) . Work out:a. The acceleration of P when t= (π )2 b. The velocity of P when t= (π )4 ...
Initially, the particle is at rest on the surface of sphere A where x = 0. It then moves freely along the line joining the centres of the spheres until it reaches the surface of sphere B. (i) On Fig. 5.2, mark with the letter M the point where the charged particle has its ...
4 A particle P moves on a straight line, starting from rest at a point O of the line. The time after P starts to move is ts, and the particle moves along the line with constant accelerationms2 until it passes through a point A at time t = 8. After passing through A the velocity...
The behavior of a very small solid spherical particle initially at rest on the surface of a flat plate in a laminar boundary layer along the plate is investigated. The Stokes drag is the only force considered to be acting on the particle. The fluid Reynolds number Re f is assumed to be ...
4.).A300g particle(A),initially moving to the right along a frictionless track at1.0ms,bounces elastically off a600g particle(B)that is initially at rest. Draw the position and velocity graphs for each particle, beginning2....
【题目】A particle A of mass 5 kg rests on a smoothhorizontal table.Particle A is attached to one end of a lightinextensible string which passes over a smoothpulley fixed to the edge ofthe table The otherend of the string is attached to particle B ofmass 4 kg which hangs freely below...
A particle starts rotating from rest according to the formula theta ... 03:00 The initial angular velocity of a heavy flywheel rotating on its axis ... 03:16 A wheel starts rotating with an-angular velocity of 2 rad/s. If it rot... 03:09 A flywheel is rotating at the rate of 100...